6월 13일(수) 오후 5시부터 나노융합학과에서 세미나가 있을 예정이오니, 관심있는 분들의 많은 참여 바랍니다.
<컨퍼런스룸Ⅱ(A-102호)는 융기원 A동 1층 CJ 식당 쪽 출구로 나가면 별도의 건물에 있습니다.>
Title : How to Achieve Sustainable Use of a Scarce Metal Like Platinum
Speaker : Prof. Younan Xia (Georgia Institute of Technology)
Date & Time : 2012. 6. 13. 수요일 17:00
Where : 융기원 컨퍼런스룸Ⅱ (A-102호)
Abstract
Platinum is widely used in many industrial applications, especially for catalysis and fuel cell technology due to its ability to maneuver both oxidation and reduction reactions. In addition to size, the shape or morphology of a Pt nanocrystal provides a very sensitive knob for tailoring its catalytic and electrocatalytic properties. A number of chemical routes have recently been developed to produce Pt nanocrystals with well-controlled shapes to improve their performance in terms of both catalytic activity and selectivity. Conventional polyhedrons (e.g., spheres, cubes, octahedrons, and tetrahedrons) and their overgrown structures (e.g., multipods) have all been obtained in reasonably high yields, as well as some unconventional shapes (e.g., concave cubes and tetrahexahedrons). Compared to the commercial Pt catalysts, these novel welldefined nanocrystals exhibit greatly enhanced activity and selectivity for a range of chemical reactions. As a result, their loading in a typical catalyst could be drastically reduced to achieve sustainable use. In this talk, I will discuss these new developments with examples from my own research group, as well as their potential extensions to other different metal systems.
Biography
Younan Xia is the Brock Family Chair and GRA Eminent Scholar in Nanomedicine in the Wallace H. Coulter Department of Biomedical Engineering at Georgia Institute of Technology and Emory University. He also holds a joint appointment in the School of Chemistry and Biochemistry at Georgia Institute of Technology.
His research interests include development of new methodologies for controlling the synthesis of nanomaterials and exploration of their applications in biomedical and energy research. He received a B.S. degree in chemical physics from the University of Science and Technology of China (USTC) in 1987 and then worked as a graduate student on inorganic nonlinear optical crystals in the Chinese Academy of Sciences. He came to the States in 1991, received a M.S. degree in inorganic chemistry from University of Pennsylvania (with the late Professor Alan G. MacDiarmid) in 1993, and a Ph.D. degree in physical chemistry from Harvard University (with Professor George M. Whitesides) in 1996. He continued his training at Harvard as a postdoctoral fellow for one additional year, joined the University of Washington (in Seattle) as an Assistant Professor of Chemistry in 1997, and was promoted to Professor in 2004. His group relocated to Washington University in St. Louis in 2007 and then to Georgia Tech in 2012. Dr. Xia has received a number of awards, including a Materials Research Society (MRS) Fellow (2009); an NIH Director"s Pioneer Award (2006); a Leo Hendrik Baekeland Award from the American Chemical Society (2005); a Camille Dreyfus Teacher Scholar (2002); a David and Lucile Packard Fellow in Science and Engineering (2000); an NSF CAREER Award (2000); an Alfred P. Sloan Research Fellow (2000); a Victor K. LaMer Award from the American Chemical Society (1999); and a Camille and Henry Dreyfus New Faculty Award (1997). He has co-authored more than 480 publications in peer-reviewed journals. He was ranked a Top 10 Chemist and Materials Scientist based on the number of citation per paper. He is an Associate Editor of Nano Letters since 2002, and serves on the international advisory boards of Angewandte Chemie International Edition, Accounts of Chemical Research, Advanced Healthcare Materials, Advanced Functional Materials, Nano Today, Nano Research, and many others.
초청자 : 나노융합학과 Prof. JanLagerwall (연락처 : 031-888-9165, janlagerwall@snu.ac.kr)
